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$142+ Cheap flights from Baltimore (BWI) to Ottawa (YOW)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/8. Fares are subject to change and may not be available on all flights or dates of travel.
BWI — YOW
Apr 20 — Apr 271
Mon 4/20
Mon 4/27
1 adult, Economy
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Cheap flight deals from Baltimore to Ottawa

Cheapest flights from Baltimore to Ottawa
Explore the most affordable flight options available from Baltimore to Ottawa. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 21, 2026.

This Kiwi.com deal was found by Cheapflights users on 3/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/206:35 am
BWI
-
YOW
1 stop10h 24m
Multiple Airlines
Wed 4/297:00 am
YOW
-
BWI
1 stop26h 17m
Multiple Airlines
Deal found 3/18$321
This Kiwi.com deal was found by Cheapflights users on 3/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/24:05 pm
BWI
-
YOW
1 stop24h 48m
Multiple Airlines
Sat 5/97:00 am
YOW
-
BWI
1 stop10h 07m
Multiple Airlines
Deal found 3/18$328
This Kiwi.com deal was found by Cheapflights users on 3/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/206:35 am
BWI
-
YOW
1 stop10h 24m
Multiple Airlines
Mon 4/274:45 pm
YOW
-
BWI
2 stops15h 22m
Multiple Airlines
Deal found 3/18$336
This Kiwi.com deal was found by Cheapflights users on 3/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/206:35 am
BWI
-
YOW
1 stop10h 24m
Multiple Airlines
Tue 4/284:45 pm
YOW
-
BWI
1 stop15h 22m
Multiple Airlines
Deal found 3/18$338
This Kiwi.com deal was found by Cheapflights users on 3/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/206:35 am
BWI
-
YOW
1 stop10h 24m
Multiple Airlines
Thu 4/234:15 pm
YOW
-
BWI
1 stop17h 22m
Multiple Airlines
Deal found 3/16$352
This Kiwi.com deal was found by Cheapflights users on 3/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/206:35 am
BWI
-
YOW
1 stop10h 24m
Multiple Airlines
Tue 4/217:00 am
YOW
-
BWI
1 stop15h 20m
Multiple Airlines
Deal found 3/16$370
This Kiwi.com deal was found by Cheapflights users on 3/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/49:56 pm
BWI
-
YOW
2 stops13h 03m
Multiple Airlines
Mon 5/114:20 pm
YOW
-
BWI
1 stop16h 55m
Multiple Airlines
Deal found 3/20$386
This Kiwi.com deal was found by Cheapflights users on 3/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/92:21 pm
BWI
-
YOW
1 stop9h 37m
Multiple Airlines
Sun 4/129:20 am
YOW
-
BWI
2 stops35h 45m
Multiple Airlines
Deal found 3/18$387
This Kiwi.com deal was found by Cheapflights users on 3/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/229:59 pm
BWI
-
YOW
2 stops15h 00m
Multiple Airlines
Thu 4/304:45 pm
YOW
-
BWI
1 stop14h 26m
Multiple Airlines
Deal found 3/16$388
This Kiwi.com deal was found by Cheapflights users on 3/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/309:59 pm
BWI
-
YOW
1 stop18h 54m
Multiple Airlines
Thu 5/711:00 am
YOW
-
BWI
2 stops20h 11m
Multiple Airlines
Deal found 3/16$391

Find flight deals from Baltimore to Ottawa

Discover tips and strategies to find the most affordable flight options for your journey from Baltimore (BWI) to Ottawa (YOW). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated March 21, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$321
(Kiwi.com)

One-way from

$142
(Kiwi.com)

Popular in

December

Cheapest in

October

Average price

$478
Provider with most accurate pricing for Baltimore/Washington-Ottawa flight deals.
Search Deals
Provider most trusted by Cheapflights users for Baltimore/Washington-Ottawa flights.
Search Deals
From Baltimore/Washington to Ottawa
Search Deals
One-way flight from Baltimore/Washington to Ottawa
Search Deals
Highest demand for flights based on searches. 15% potential increase in price ($79 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($15 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Baltimore to Ottawa that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated March 21, 2026.
Use the filters below to find and compare flights from Baltimore to Ottawa that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BaltimoreOttawa

BWI - YOW

BWIYOW

Baltimore/Washington

Thu 4/23

2:30 pm-11:58 pm

1 stop9h 28m

Ottawa

Sun 4/26

4:20 pm-12:44 am

2 stops32h 24m

$435

BaltimoreOttawa

BWI - YOW

BWIYOW

Baltimore/Washington

Mon 5/11

7:30 am-4:53 pm

1 stop9h 23m

Ottawa

Thu 5/14

2:30 pm-7:11 am

1 stop16h 41m

$442

BaltimoreOttawa

BWI - YOW

BWIYOW

Baltimore/Washington

Mon 5/11

10:10 am-12:25 pm

2 stops26h 15m

Ottawa

Wed 5/13

1:45 pm-9:26 pm

3 stops31h 41m

$592

BaltimoreOttawa

BWI - YOW

BWIYOW

Baltimore/Washington

Thu 4/2

9:08 am-5:13 pm

1 stop8h 05m

Ottawa

Sun 4/5

4:20 pm-10:58 am

1 stop18h 38m

$629

BaltimoreOttawa

BWI - YOW

BWIYOW

Baltimore/Washington

Mon 5/4

10:10 am-12:54 pm

3 stops26h 44m

Ottawa

Fri 5/8

2:20 pm-9:15 am

3 stops18h 55m

$687

BaltimoreOttawa

BWI - YOW

BWIYOW

Baltimore/Washington

Wed 7/8

6:15 am-9:35 pm

1 stop15h 20m

Ottawa

Sat 7/18

10:44 am-9:26 pm

1 stop10h 42m

$798
Quickest round-trip

BaltimoreOttawa

BWI - YOW

BWIYOW

Baltimore/Washington

Wed 4/29

3:42 pm-9:35 pm

1 stop5h 53m

Ottawa

Sun 5/3

10:44 am-5:28 pm

1 stop6h 44m

$830

BaltimoreOttawa

BWI - YOW

BWIYOW

Baltimore/Washington

Sat 4/18

6:00 am-1:59 pm

1 stop7h 59m

Ottawa

Wed 4/22

6:25 am-9:23 pm

1 stop14h 58m

$830

BaltimoreOttawa

BWI - YOW

BWIYOW

Baltimore/Washington

Fri 9/4

10:40 am-9:35 pm

1 stop10h 55m

Ottawa

Mon 9/7

5:20 pm-9:34 am

1 stop16h 14m

$830

BaltimoreOttawa

BWI - YOW

BWIYOW

Baltimore/Washington

Sun 4/19

3:42 pm-9:35 pm

1 stop5h 53m

Ottawa

Mon 4/27

6:25 am-9:23 pm

1 stop14h 58m

$830

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/16

Showing 1-10 of 16 resultsSorted by cheapest first
1
2

Compare providers for flights from Baltimore to Ottawa

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Baltimore to Ottawa in March.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Baltimore-Ottawa flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Baltimore-Ottawa flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Baltimore-Ottawa flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Baltimore-Ottawa flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Baltimore-Ottawa flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Baltimore to Ottawa

Have a flexible travel schedule? Discover the best time to fly to Ottawa from Baltimore with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Baltimore to Ottawa

What is the cheapest month to book a flight from Baltimore to Ottawa?

Currently, March is the cheapest month in which you can book a flight from Baltimore to Ottawa (average of $112). Flying from Baltimore to Ottawa in December is currently the most expensive (average of $221). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Related info for your journey

Find useful and relevant information for your journey from Baltimore to Ottawa. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • Can I find deals for flights from Baltimore to Ottawa that include hotel bookings?

    Yes. In addition to deals on Baltimore to Ottawa flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Baltimore to Ottawa?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Baltimore to Ottawa.

  • Can I find deals for business class flights from Baltimore to Ottawa?

    Yes. Cheapflights offers flight deals from Baltimore to Ottawa by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Baltimore to Ottawa?

    Currently, March is the cheapest month in which you can book a flight from Baltimore to Ottawa (average of $112). Flying from Baltimore to Ottawa in December is currently the most expensive (average of $221). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Ottawa?

Book flights to Ottawa if you plan to visit one of these locations
Gatineau
Petawawa

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